Update app.py

app.py

@@ -89,7 +89,7 @@ def process_pdf_file(file: AskFileResponse):
         f.write(file.content)
 
     pdf_loader = PyPDFLoader(temp_file_path)
-    documents = pdf_loader.load()
+    documents = str(pdf_loader.load())
     texts = text_splitter.split_texts(documents)
     return texts